I use the long lasting permethrin nomad travel sell last 6 wks on clothing if i remember correctly, i have a army coverall i cover in the stuff and wear it to walk down to the beach i use, as there are alot of ferns and alot of ticks,once on the beach off it comes,before i used it i found ticks on my clothing after walking through the ferns,since using none,thats good enough for me to keep using it,i hate ticks the ruin a trip out for me worrying about getting covered in them.